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This artist’s conception illustrates one of the most primitive supermassive black holes known (central black dot) at the core of a young, star-rich galaxy. Astronomers using NASA’s Spitzer Space Telescope have uncovered two of these early objects, dating back to about 13 billion years ago. The monstrous black holes are among the most distant known, and appear to be in the very earliest stages of formation, earlier than any observed so far. Credit: NASA/JPL-Caltech.

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Credit: Tim Doucette.

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This 2016 Curiosity rover selfie shows the vehicle at the “Okoruso” drilling site on Mount Sharp’s Naukluft Plateau. The Martian scene is a mosaic of images taken with the arm-mounted Mars Hands Lens Imager (MAHLI). Credit: NASA/JPL-Caltech/MSSS. Credit: NASA/JPL-Caltech/MSSS.

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November 2025

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Lemmon at perihelion

Hassan Abdollahabadi, taken from Chelpo, Rivash, Iran

Comet Lemmon (C/2025 A6) is now on an outbound path, having reached perihelion — its closest point to the Sun — on Nov. 8. This imager captured the comet that night with a Canon mirrorless camera, stacking twenty 20-second sky frames taken with a 135mm lens at f/2.8 and ISO 1600.